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Yamaha CS-60 issues: sub osc LFO > VCO not working + random bad notes

V CL All Messages By This Member #4598 Hi all, I have a Yamaha CS-60 I recently acquired from a local seller that has MIDI kit installed.? 1. Upon testing I noticed the sub oscillator LFO > VCO slider does not work/effect the sound (however, LFO > VCF and LFO > VCA do work fine).? What is the likely culprit for this and how easy is it to fix? 2. I notice after getting the synth home and playing it for awhile, that intermittent random bad notes would happen when playing the keys. It doesn't seem to matter what keys and it seems to happen randomly... ie after a few minutes or after 20 minutes.? As an example, if I'm playing a scale and I hit one of the keys (ie a middle C), that will give a severely out of tune note. Coming back to the key immediately after and its in tune again.? Any ideas what could cause random bad note behaviour across the keyboard? It doesn't seem to be a specific voice, but I have no idea what is triggering a bad note to occur randomly. Perhaps the MIDI retrofit messed something up, or when the synth was transported to my place the voice cards got jiggled around from bumpy driving? Any suggestions on where to look for fixing this/effort required would be most welcome. I'd need to take it to a tech and hoping it won't be an expensive fix.? Thanks.
unfrostedpoptart All Messages By This Member #4599 开云体育 On Nov 5, 2017, at 9:32 PM, virusindigo2@... [yamahacs80] <yamahacs80@...> wrote: Hi all, I have a Yamaha CS-60 I recently acquired from a local seller that has MIDI kit installed.? 1. Upon testing I noticed the sub oscillator LFO > VCO slider does not work/effect the sound (however, LFO > VCF and LFO > VCA do work fine).? What is the likely culprit for this and how easy is it to fix? This is normal. With the added toggle switch one way, the slider works normally. With it the other way, the LFO -> VCO is control via MIDI mod wheel. 2. I notice after getting the synth home and playing it for awhile, that intermittent random bad notes would happen when playing the keys. It doesn't seem to matter what keys and it seems to happen randomly... ie after a few minutes or after 20 minutes.? Any suggestions on where to look for fixing this/effort required would be most welcome. I'd need to take it to a tech and hoping it won't be an expensive fix. That's not normal :( ? Unfortunately, nothing obvious comes to mind. ?I’d try contacting Kenton and see if they’ve heard of this. ?David
Florian Anwander All Messages By This Member #4600 开云体育 Hello On 06.11.17 06:32 , virusindigo2@... [yamahacs80] wrote: ? 2. I notice after getting the synth home and playing it for awhile, that intermittent random bad notes would happen when playing the keys. It doesn't seem to matter what keys and it seems to happen randomly... ie after a few minutes or after 20 minutes.? . Sounds like? a voice getting out of tune. Might be a bad trimmer, but more likely a VCO chip dying. I recommend to add a LED to each voicecard, with which you can detect, which voice is used: Touching the trimmers for the tuning is another method, but it is quite tiring. I am sure you will finde the culprit soon. Florian
V CL All Messages By This Member #4601 Thanks for the reply... do you mean the MIDI kit adds a toggle switch for LFO > VCO modulation? If so, where would I find that switch to change it back? The seller showed me an emergency switch for MIDI off/reset in case of stuck notes, but never a toggle switch to control LFO > VCO modulation from sub oscillator. On Monday, November 6, 2017, 9:27:30 PM PST, David Rogoff david@... [yamahacs80] wrote: ? On Nov 5, 2017, at 9:32 PM, virusindigo2@... [yamahacs80] <yamahacs80@...> wrote: Hi all, I have a Yamaha CS-60 I recently acquired from a local seller that has MIDI kit installed.? 1. Upon testing I noticed the sub oscillator LFO > VCO slider does not work/effect the sound (however, LFO > VCF and LFO > VCA do work fine).? What is the likely culprit for this and how easy is it to fix? This is normal. With the added toggle switch one way, the slider works normally. With it the other way, the LFO -> VCO is control via MIDI mod wheel. 2. I notice after getting the synth home and playing it for awhile, that intermittent random bad notes would happen when playing the keys. It doesn't seem to matter what keys and it seems to happen randomly... ie after a few minutes or after 20 minutes.? Any suggestions on where to look for fixing this/effort required would be most welcome. I'd need to take it to a tech and hoping it won't be an expensive fix. That's not normal :( ? Unfortunately, nothing obvious comes to mind. ?I’d try contacting Kenton and see if they’ve heard of this. ?David
unfrostedpoptart All Messages By This Member #4602 开云体育 There should be a push button and a toggle switch. ?The instructions say to add them on the front panel below the tuning knob: In the last few I’ve done, I’ve hidden then in the power cord compartment so I didn’t have to drill holes in the panel. ?David toggle quoted message Show quoted text On Nov 9, 2017, at 9:11 PM, V CL virusindigo2@... [yamahacs80] <yamahacs80@...> wrote: Thanks for the reply... do you mean the MIDI kit adds a toggle switch for LFO > VCO modulation? If so, where would I find that switch to change it back? The seller showed me an emergency switch for MIDI off/reset in case of stuck notes, but never a toggle switch to control LFO > VCO modulation from sub oscillator. On Monday, November 6, 2017, 9:27:30 PM PST, David Rogoff david@... [yamahacs80] <yamahacs80@...> wrote: On Nov 5, 2017, at 9:32 PM,?virusindigo2@...?[yamahacs80] <yamahacs80@...> wrote: Hi all, I have a Yamaha CS-60 I recently acquired from a local seller that has MIDI kit installed.? 1. Upon testing I noticed the sub oscillator LFO > VCO slider does not work/effect the sound (however, LFO > VCF and LFO > VCA do work fine).? What is the likely culprit for this and how easy is it to fix? This is normal. With the added toggle switch one way, the slider works normally. With it the other way, the LFO -> VCO is control via MIDI mod wheel.
V CL All Messages By This Member #4603 Thank you so much!! I found the toggle switch and flipped it other direction, and sure enough the LFO > VCO slider now affects the sound! :)? Thankfully no fix is required... now to keep my eyes on the "bad note" problem and see if I can narrow it down... Cheers On Thursday, November 9, 2017, 9:21:10 PM PST, David Rogoff david@... [yamahacs80] wrote: ? There should be a push button and a toggle switch. ?The instructions say to add them on the front panel below the tuning knob: In the last few I’ve done, I’ve hidden then in the power cord compartment so I didn’t have to drill holes in the panel. ?David toggle quoted message Show quoted text On Nov 9, 2017, at 9:11 PM, V CL virusindigo2@... [yamahacs80] <yamahacs80@...> wrote: Thanks for the reply... do you mean the MIDI kit adds a toggle switch for LFO > VCO modulation? If so, where would I find that switch to change it back? The seller showed me an emergency switch for MIDI off/reset in case of stuck notes, but never a toggle switch to control LFO > VCO modulation from sub oscillator. On Monday, November 6, 2017, 9:27:30 PM PST, David Rogoff david@... [yamahacs80] <yamahacs80@...> wrote: On Nov 5, 2017, at 9:32 PM,?virusindigo2@...?[yamahacs80] <yamahacs80@...> wrote: Hi all, I have a Yamaha CS-60 I recently acquired from a local seller that has MIDI kit installed.? 1. Upon testing I noticed the sub oscillator LFO > VCO slider does not work/effect the sound (however, LFO > VCF and LFO > VCA do work fine).? What is the likely culprit for this and how easy is it to fix? This is normal. With the added toggle switch one way, the slider works normally. With it the other way, the LFO -> VCO is control via MIDI mod wheel.

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